Kraus Al

Insider

First SEC filing: July 10, 2006 · Latest: July 10, 2006

On this page

Insider at Companies where this person is a reporting insider.
Insider transactions Every share this person bought or sold, from Form 4 filings.
Derivatives Options and other derivative holdings reported by this person.
Initial holdings The stakes this person held when they first started reporting.

Insider at

CTSO buying May 6, 2022

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 71 non-open-market transactions below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

71 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Feb. 6, 2023	CTSO	M	12,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Feb. 6, 2023	CTSO	M	12,000	$2.65	$31,800	142,046 Direct	+9.23%	Acquired	-86.4% (price as of 2026-08-20)
Aug. 10, 2022	CTSO	A	37,950	—	—	37,950 Direct	—	Acquired	(price as of 2026-08-20)
May 6, 2022	CTSO	P	5,000	$1.96	$9,800	130,046 Direct	+4.00%	Acquired	-81.6% (price as of 2026-08-20)
Aug. 31, 2021	CTSO	M	4,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Aug. 31, 2021	CTSO	S	4,000	$9.40	$37,600	125,046 Direct	-3.10%	Disposed	-96.2% (price as of 2026-08-20)
Aug. 31, 2021	CTSO	M	4,000	$4.12	$16,480	129,046 Direct	+3.20%	Acquired	-91.3% (price as of 2026-08-20)
April 12, 2021	CTSO	A	34,500	—	—	34,500 Direct	—	Acquired	(price as of 2026-08-20)
Nov. 10, 2020	CTSO	M	8,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Nov. 10, 2020	CTSO	S	8,000	$8.00	$64,000	125,046 Direct	-6.01%	Disposed	-95.5% (price as of 2026-08-20)
Nov. 10, 2020	CTSO	M	8,000	$3.45	$27,600	133,046 Direct	+6.40%	Acquired	-89.6% (price as of 2026-08-20)
Feb. 28, 2020	CTSO	A	30,000	—	—	30,000 Direct	—	Acquired	(price as of 2026-08-20)
July 22, 2019	CTSO	A	30,000	—	—	30,000 Direct	—	Acquired	(price as of 2026-08-20)
Aug. 30, 2018	CTSO	M	18,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Aug. 30, 2018	CTSO	M	8,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Aug. 30, 2018	CTSO	S	26,000	$14.47	$376,220	125,046 Direct	-17.21%	Disposed	-97.5% (price as of 2026-08-20)
Aug. 30, 2018	CTSO	M	18,000	$4.20	$75,600	151,046 Direct	+13.53%	Acquired	-91.4% (price as of 2026-08-20)
Aug. 30, 2018	CTSO	M	8,000	$2.10	$16,800	133,046 Direct	+6.40%	Acquired	-82.8% (price as of 2026-08-20)
March 15, 2018	CTSO	A	28,875	—	—	28,875 Direct	—	Acquired	(price as of 2026-08-20)
March 15, 2018	CTSO	A	3,300	—	—	125,046 Direct	+2.71%	Acquired	(price as of 2026-08-20)
Feb. 24, 2017	CTSO	A	27,500	—	—	27,500 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 24, 2017	CTSO	A	6,000	—	—	121,746 Direct	+5.18%	Acquired	(price as of 2026-08-20)
June 7, 2016	CTSO	A	24,000	—	—	24,000 Direct	—	Acquired	(price as of 2026-08-20)
June 7, 2016	CTSO	A	5,000	—	—	60,746 Direct	+8.97%	Acquired	(price as of 2026-08-20)
Oct. 15, 2015	CTSO	M 10b5-1	10,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Oct. 15, 2015	CTSO	S 10b5-1	6,774	$6.22	$42,134	55,746 Direct	-10.83%	Disposed	-94.2% (price as of 2026-08-20)
Oct. 15, 2015	CTSO	M 10b5-1	6,774	$0.88	$5,961	62,520 Direct	+12.15%	Acquired	-59.1% (price as of 2026-08-20)
Oct. 8, 2015	CTSO	M 10b5-1	10,000	—	—	6,774 Direct	-59.62%	Disposed	(price as of 2026-08-20)
Oct. 8, 2015	CTSO	S 10b5-1	10,000	$6.39	$63,900	55,746 Direct	-15.21%	Disposed	-94.4% (price as of 2026-08-20)
Oct. 8, 2015	CTSO	M 10b5-1	10,000	$0.88	$8,800	65,746 Direct	+17.94%	Acquired	-59.1% (price as of 2026-08-20)
Oct. 1, 2015	CTSO	M 10b5-1	10,000	—	—	26,773 Direct	-27.19%	Disposed	(price as of 2026-08-20)
Oct. 1, 2015	CTSO	S 10b5-1	10,000	$6.26	$62,600	55,746 Direct	-15.21%	Disposed	-94.2% (price as of 2026-08-20)
Oct. 1, 2015	CTSO	M 10b5-1	10,000	$0.88	$8,800	65,746 Direct	+17.94%	Acquired	-59.1% (price as of 2026-08-20)
Sept. 24, 2015	CTSO	M 10b5-1	10,000	—	—	36,773 Direct	-21.38%	Disposed	(price as of 2026-08-20)
Sept. 24, 2015	CTSO	S 10b5-1	10,000	$6.44	$64,400	55,746 Direct	-15.21%	Disposed	-94.4% (price as of 2026-08-20)
Sept. 24, 2015	CTSO	M 10b5-1	10,000	$0.88	$8,800	65,746 Direct	+17.94%	Acquired	-59.1% (price as of 2026-08-20)
Sept. 17, 2015	CTSO	M 10b5-1	10,000	—	—	46,773 Direct	-17.61%	Disposed	(price as of 2026-08-20)
Sept. 17, 2015	CTSO	S 10b5-1	10,000	$6.64	$66,400	55,746 Direct	-15.21%	Disposed	-94.6% (price as of 2026-08-20)
Sept. 17, 2015	CTSO	M 10b5-1	10,000	$0.88	$8,800	65,746 Direct	+17.94%	Acquired	-59.1% (price as of 2026-08-20)
Sept. 10, 2015	CTSO	M 10b5-1	10,000	—	—	56,773 Direct	-14.98%	Disposed	(price as of 2026-08-20)
Sept. 10, 2015	CTSO	S 10b5-1	10,000	$7.26	$72,600	55,746 Direct	-15.21%	Disposed	-95.0% (price as of 2026-08-20)
Sept. 10, 2015	CTSO	M 10b5-1	10,000	$0.88	$8,800	65,746 Direct	+17.94%	Acquired	-59.1% (price as of 2026-08-20)
Sept. 3, 2015	CTSO	M 10b5-1	10,000	—	—	66,773 Direct	-13.03%	Disposed	(price as of 2026-08-20)
Sept. 3, 2015	CTSO	S 10b5-1	10,000	$7.26	$72,600	55,746 Direct	-15.21%	Disposed	-95.0% (price as of 2026-08-20)
Sept. 3, 2015	CTSO	M 10b5-1	10,000	$0.88	$8,800	65,746 Direct	+17.94%	Acquired	-59.1% (price as of 2026-08-20)
Aug. 27, 2015	CTSO	M 10b5-1	10,000	—	—	76,773 Direct	-11.52%	Disposed	(price as of 2026-08-20)
Aug. 27, 2015	CTSO	S 10b5-1	10,000	$6.39	$63,900	55,746 Direct	-15.21%	Disposed	-94.4% (price as of 2026-08-20)
Aug. 27, 2015	CTSO	M 10b5-1	10,000	$0.88	$8,800	65,746 Direct	+17.94%	Acquired	-59.1% (price as of 2026-08-20)
Aug. 20, 2015	CTSO	M 10b5-1	10,000	—	—	86,773 Direct	-10.33%	Disposed	(price as of 2026-08-20)
Aug. 20, 2015	CTSO	S 10b5-1	10,000	$7.26	$72,600	55,746 Direct	-15.21%	Disposed	-95.0% (price as of 2026-08-20)
Aug. 20, 2015	CTSO	M 10b5-1	10,000	$0.88	$8,800	65,746 Direct	+17.94%	Acquired	-59.1% (price as of 2026-08-20)
Aug. 13, 2015	CTSO	M 10b5-1	10,000	—	—	96,773 Direct	-9.37%	Disposed	(price as of 2026-08-20)
Aug. 13, 2015	CTSO	S 10b5-1	10,000	$6.26	$62,600	55,746 Direct	-15.21%	Disposed	-94.2% (price as of 2026-08-20)
Aug. 13, 2015	CTSO	M 10b5-1	10,000	$0.88	$8,800	65,746 Direct	+17.94%	Acquired	-59.1% (price as of 2026-08-20)
Aug. 6, 2015	CTSO	M 10b5-1	10,000	—	—	106,773 Direct	-8.56%	Disposed	(price as of 2026-08-20)
Aug. 6, 2015	CTSO	S 10b5-1	10,000	$6.48	$64,800	55,746 Direct	-15.21%	Disposed	-94.4% (price as of 2026-08-20)
Aug. 6, 2015	CTSO	M 10b5-1	10,000	$0.88	$8,800	65,746 Direct	+17.94%	Acquired	-59.1% (price as of 2026-08-20)
July 30, 2015	CTSO	M 10b5-1	10,000	—	—	116,773 Direct	-7.89%	Disposed	(price as of 2026-08-20)
July 30, 2015	CTSO	S 10b5-1	10,000	$6.34	$63,400	55,746 Direct	-15.21%	Disposed	-94.3% (price as of 2026-08-20)
July 30, 2015	CTSO	M 10b5-1	10,000	$0.88	$8,800	65,746 Direct	+17.94%	Acquired	-59.1% (price as of 2026-08-20)
July 23, 2015	CTSO	M 10b5-1	10,000	—	—	126,773 Direct	-7.31%	Disposed	(price as of 2026-08-20)
July 23, 2015	CTSO	S 10b5-1	10,000	$6.28	$62,800	55,746 Direct	-15.21%	Disposed	-94.3% (price as of 2026-08-20)
July 23, 2015	CTSO	M 10b5-1	10,000	$0.88	$8,800	65,746 Direct	+17.94%	Acquired	-59.1% (price as of 2026-08-20)
July 16, 2015	CTSO	M 10b5-1	10,000	—	—	136,773 Direct	-6.81%	Disposed	(price as of 2026-08-20)
July 16, 2015	CTSO	S 10b5-1	10,000	$6.33	$63,300	55,746 Direct	-15.21%	Disposed	-94.3% (price as of 2026-08-20)
July 16, 2015	CTSO	M 10b5-1	10,000	$0.88	$8,800	65,746 Direct	+17.94%	Acquired	-59.1% (price as of 2026-08-20)
July 9, 2015	CTSO	M 10b5-1	10,000	—	—	146,773 Direct	-6.38%	Disposed	(price as of 2026-08-20)
July 9, 2015	CTSO	S 10b5-1	10,000	$5.98	$59,800	55,746 Direct	-15.21%	Disposed	-94.0% (price as of 2026-08-20)
July 9, 2015	CTSO	M 10b5-1	10,000	$0.88	$8,800	65,746 Direct	+17.94%	Acquired	-59.1% (price as of 2026-08-20)
July 2, 2015	CTSO	M 10b5-1	10,000	—	—	156,773 Direct	-6.00%	Disposed	(price as of 2026-08-20)
July 2, 2015	CTSO	S 10b5-1	10,000	$6.29	$62,900	55,746 Direct	-15.21%	Disposed	-94.3% (price as of 2026-08-20)
July 2, 2015	CTSO	M 10b5-1	10,000	$0.88	$8,800	65,746 Direct	+17.94%	Acquired	-59.1% (price as of 2026-08-20)
June 25, 2015	CTSO	S 10b5-1	10,000	$7.43	$74,300	55,746 Direct	-15.21%	Disposed	-95.2% (price as of 2026-08-20)
June 25, 2015	CTSO	M 10b5-1	10,000	$0.88	$8,800	65,746 Direct	+17.94%	Acquired	-59.1% (price as of 2026-08-20)
June 24, 2015	CTSO	M 10b5-1	3,205	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
June 24, 2015	CTSO	S 10b5-1	3,205	$7.00	$22,435	55,746 Direct	-5.44%	Disposed	-94.9% (price as of 2026-08-20)
June 24, 2015	CTSO	M 10b5-1	3,205	$5.50	$17,628	58,746 Direct	+5.77%	Acquired	-93.5% (price as of 2026-08-20)
June 18, 2015	CTSO	M 10b5-1	10,000	—	—	166,773 Direct	-5.66%	Disposed	(price as of 2026-08-20)
June 18, 2015	CTSO	S 10b5-1	10,000	$5.78	$57,800	55,746 Direct	-15.21%	Disposed	-93.8% (price as of 2026-08-20)
June 18, 2015	CTSO	M 10b5-1	10,000	$0.88	$8,800	65,746 Direct	+17.94%	Acquired	-59.1% (price as of 2026-08-20)
June 15, 2015	CTSO	M 10b5-1	10,000	—	—	166,773 Direct	-5.66%	Disposed	(price as of 2026-08-20)
June 11, 2015	CTSO	M 10b5-1	10,000	—	—	176,773 Direct	-5.35%	Disposed	(price as of 2026-08-20)
June 11, 2015	CTSO	S 10b5-1	10,000	$6.29	$62,900	55,746 Direct	-15.21%	Disposed	-94.3% (price as of 2026-08-20)
June 11, 2015	CTSO	M 10b5-1	10,000	$0.88	$8,800	65,746 Direct	+17.94%	Acquired	-59.1% (price as of 2026-08-20)
June 4, 2015	CTSO	M 10b5-1	10,000	—	—	186,773 Direct	-5.08%	Disposed	(price as of 2026-08-20)
June 4, 2015	CTSO	S 10b5-1	10,000	$6.30	$63,000	55,746 Direct	-15.21%	Disposed	-94.3% (price as of 2026-08-20)
June 4, 2015	CTSO	M 10b5-1	10,000	$0.88	$8,800	65,746 Direct	+17.94%	Acquired	-59.1% (price as of 2026-08-20)
May 28, 2015	CTSO	M 10b5-1	10,000	—	—	196,773 Direct	-4.84%	Disposed	(price as of 2026-08-20)
May 28, 2015	CTSO	S 10b5-1	10,000	$6.32	$63,200	55,746 Direct	-15.21%	Disposed	-94.3% (price as of 2026-08-20)
May 28, 2015	CTSO	M 10b5-1	10,000	$0.88	$8,800	65,746 Direct	+17.94%	Acquired	-59.1% (price as of 2026-08-20)
May 21, 2015	CTSO	M 10b5-1	10,000	—	—	206,773 Direct	-4.61%	Disposed	(price as of 2026-08-20)
May 21, 2015	CTSO	S 10b5-1	10,000	$6.08	$60,800	55,746 Direct	-15.21%	Disposed	-94.1% (price as of 2026-08-20)
May 21, 2015	CTSO	M 10b5-1	10,000	$0.88	$8,800	65,746 Direct	+17.94%	Acquired	-59.1% (price as of 2026-08-20)
May 14, 2015	CTSO	M 10b5-1	10,000	—	—	216,773 Direct	-4.41%	Disposed	(price as of 2026-08-20)
May 14, 2015	CTSO	S 10b5-1	10,000	$6.00	$60,000	55,746 Direct	-15.21%	Disposed	-94.0% (price as of 2026-08-20)
May 14, 2015	CTSO	M 10b5-1	10,000	$0.88	$8,800	65,746 Direct	+17.94%	Acquired	-59.1% (price as of 2026-08-20)
April 8, 2015	CTSO	A	12,000	—	—	12,000 Direct	—	Acquired	(price as of 2026-08-20)
April 8, 2015	CTSO	A	55,000	—	—	55,000 Direct	—	Acquired	(price as of 2026-08-20)
Nov. 17, 2014	CTSO	M 10b5-1	50,000	—	—	5,669,328 Direct	-0.87%	Disposed	(price as of 2026-08-20)
Nov. 17, 2014	CTSO	S 10b5-1	50,000	$0.23	$11,500	1,393,631 Direct	-3.46%	Disposed	-93.7% (price as of 2026-08-20)

Showing latest 100 of 185 transactions

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Derivative holdings (Form 4 Table II)

Options, RSUs and convertible securities reported on Form 4 Table II.

Date	Ticker	Security	Underlying	Exercise price	Expiration	Shares	A/D
Feb. 6, 2023	CTSO	Stock Option (right to buy)	Common Stock (12,000)	$2.65	Feb. 6, 2023	12,000	Disposed
Aug. 10, 2022	CTSO	Stock Option (right to buy)	Common Stock (37,950)	$1.95	Aug. 10, 2032	37,950	Acquired
Aug. 31, 2021	CTSO	Stock Option (right to buy)	Common Stock (4,000)	$4.12	Jan. 18, 2022	4,000	Disposed
April 12, 2021	CTSO	Stock Option (right to buy)	Common Stock (34,500)	$8.99	April 12, 2031	34,500	Acquired
Nov. 10, 2020	CTSO	Stock Option (right to buy)	Common Stock (8,000)	$3.45	Jan. 6, 2021	8,000	Disposed
Feb. 28, 2020	CTSO	Stock Option (right to buy)	Common Stock (30,000)	$6.03	Feb. 28, 2030	30,000	Acquired
July 22, 2019	CTSO	Stock Option (right to buy)	Common Stock (30,000)	$7.33	July 22, 2029	30,000	Acquired
Aug. 30, 2018	CTSO	Stock Option (right to buy)	Common Stock (18,000)	$4.20	Jan. 28, 2019	18,000	Disposed
Aug. 30, 2018	CTSO	Stock Option (right to buy)	Common Stock (8,000)	$2.10	Jan. 8, 2019	8,000	Disposed
March 15, 2018	CTSO	Stock Option (right to buy)	Common Stock (28,875)	$7.90	March 15, 2028	28,875	Acquired
Feb. 24, 2017	CTSO	Stock Option (right to buy)	Common Stock (27,500)	$5.60	Feb. 24, 2027	27,500	Acquired
June 7, 2016	CTSO	Stock Option (right to buy)	Common Stock (24,000)	$4.69	June 7, 2026	24,000	Acquired
Oct. 15, 2015	CTSO	Stock Option	Common Stock (6,774)	$0.88	June 25, 2018	10,000	Disposed
Oct. 8, 2015	CTSO	Stock Option	Common Stock (10,000)	$0.88	June 25, 2018	10,000	Disposed
Oct. 1, 2015	CTSO	Stock Option	Common Stock (10,000)	$0.88	June 25, 2018	10,000	Disposed
Sept. 24, 2015	CTSO	Stock Option	Common Stock (10,000)	$0.88	June 25, 2018	10,000	Disposed
Sept. 17, 2015	CTSO	Stock Option	Common Stock (10,000)	$0.88	June 25, 2018	10,000	Disposed
Sept. 10, 2015	CTSO	Stock Option	Common Stock (10,000)	$0.88	June 25, 2018	10,000	Disposed
Sept. 3, 2015	CTSO	Stock Option	Common Stock (10,000)	$0.88	June 25, 2018	10,000	Disposed
Aug. 27, 2015	CTSO	Stock Option	Common Stock (10,000)	$0.88	June 25, 2018	10,000	Disposed
Aug. 20, 2015	CTSO	Stock Option	Common Stock (10,000)	$0.88	June 25, 2018	10,000	Disposed
Aug. 13, 2015	CTSO	Stock Option	Common Stock (10,000)	$0.88	June 25, 2018	10,000	Disposed
Aug. 6, 2015	CTSO	Stock Option	Common Stock (10,000)	$0.88	June 25, 2018	10,000	Disposed
July 30, 2015	CTSO	Stock Option	Common Stock (10,000)	$0.88	June 25, 2018	10,000	Disposed
July 23, 2015	CTSO	Stock Option	Common Stock (10,000)	$0.88	June 25, 2018	10,000	Disposed
July 16, 2015	CTSO	Stock Option	Common Stock (10,000)	$0.88	June 25, 2018	10,000	Disposed
July 9, 2015	CTSO	Stock Option	Common Stock (10,000)	$0.88	June 25, 2018	10,000	Disposed
July 2, 2015	CTSO	Stock Option	Common Stock (10,000)	$0.88	June 25, 2018	10,000	Disposed
June 24, 2015	CTSO	Stock Option	Common Stock (3,205)	$5.50	Dec. 31, 2017	3,205	Disposed
June 18, 2015	CTSO	Stock Option	Common Stock (10,000)	$0.88	June 25, 2018	10,000	Disposed
June 15, 2015	CTSO	Stock Option	Common Stock (10,000)	$0.88	June 25, 2018	10,000	Disposed
June 11, 2015	CTSO	Stock Option	Common Stock (10,000)	$0.88	June 25, 2018	10,000	Disposed
June 4, 2015	CTSO	Stock Option	Common Stock (10,000)	$0.88	June 25, 2018	10,000	Disposed
May 28, 2015	CTSO	Stock Option	Common Stock (10,000)	$0.88	June 25, 2018	10,000	Disposed
May 21, 2015	CTSO	Stock Option	Common Stock (10,000)	$0.88	June 25, 2018	10,000	Disposed
May 14, 2015	CTSO	Stock Option	Common Stock (10,000)	—	June 25, 2018	10,000	Disposed
April 8, 2015	CTSO	Stock Option (right to buy)	Common Stock (12,000)	$8.07	April 8, 2025	12,000	Acquired
Nov. 17, 2014	CTSO	Stock Option	Common Stock (50,000)	$0.04	June 25, 2018	50,000	Disposed
Nov. 10, 2014	CTSO	Stock Option	Common Stock (50,000)	$0.04	June 25, 2018	50,000	Disposed
Nov. 3, 2014	CTSO	Stock Option	Common Stock (50,000)	$0.04	June 25, 2018	50,000	Disposed
Oct. 27, 2014	CTSO	Stock Option	Common Stock (100,000)	$0.04	June 25, 2018	100,000	Disposed
Oct. 20, 2014	CTSO	Stock Option	Common Stock (100,000)	$0.04	June 25, 2018	100,000	Disposed
Oct. 14, 2014	CTSO	Stock Option	Common Stock (50,000)	$0.04	June 25, 2018	50,000	Disposed
Oct. 6, 2014	CTSO	Stock Option	Common Stock (50,000)	$0.04	June 25, 2018	50,000	Disposed
Sept. 29, 2014	CTSO	Stock Option	Common Stock (50,000)	$0.04	June 25, 2018	50,000	Disposed
Sept. 25, 2014	CTSO	Stock Option	Common Stock (41,500)	$0.04	June 25, 2018	41,500	Disposed
Sept. 22, 2014	CTSO	Stock Option	Common Stock (8,500)	$0.04	June 25, 2018	8,500	Disposed
Sept. 15, 2014	CTSO	Stock Option	Common Stock (50,000)	$0.04	June 25, 2018	50,000	Disposed
Sept. 8, 2014	CTSO	Stock Option	Common Stock (50,000)	$0.04	June 25, 2018	50,000	Disposed
Sept. 2, 2014	CTSO	Stock Option	Common Stock (50,000)	$0.04	June 25, 2018	50,000	Disposed
Aug. 25, 2014	CTSO	Stock Option	Common Stock (100,000)	$0.04	June 25, 2018	100,000	Disposed
Aug. 18, 2014	CTSO	Stock Option	Common Stock (100,000)	$0.04	June 25, 2018	100,000	Disposed
Aug. 11, 2014	CTSO	Stock Option	Common Stock (100,000)	$0.04	June 25, 2018	100,000	Disposed
Aug. 4, 2014	CTSO	Stock Option	Common Stock (50,000)	$0.04	June 25, 2018	50,000	Disposed
July 28, 2014	CTSO	Stock Option	Common Stock (100,000)	$0.04	June 25, 2018	100,000	Disposed
July 21, 2014	CTSO	Stock Option	Common Stock (50,000)	$0.04	June 25, 2018	50,000	Disposed
July 14, 2014	CTSO	Stock Option	Common Stock (50,000)	$0.04	June 25, 2018	50,000	Disposed
July 10, 2014	CTSO	Stock Option	Common Stock (50,000)	$0.04	June 25, 2018	50,000	Disposed
July 7, 2014	CTSO	Stock Option	Common Stock (50,000)	$0.04	June 25, 2018	50,000	Disposed
June 30, 2014	CTSO	Stock Option	Common Stock (50,000)	$0.04	June 25, 2018	50,000	Disposed
June 23, 2014	CTSO	Stock Option	Common Stock (50,000)	$0.04	June 25, 2018	50,000	Disposed
June 18, 2014	CTSO	Stock Option	Common Stock (50,000)	$0.04	June 25, 2018	50,000	Disposed
March 28, 2014	CTSO	Stock Option	Common Stock (300,000)	$0.20	March 28, 2024	300,000	Acquired
April 4, 2013	CTSO	Stock Option	Common Stock (300,000)	$0.11	April 4, 2023	300,000	Acquired
Feb. 6, 2013	CTSO	Stock Option	Common Stock (300,000)	$0.11	Feb. 6, 2023	300,000	Acquired
Jan. 18, 2012	CTSO	Stock Option	Common Stock (100,000)	$0.16	Jan. 18, 2022	100,000	Acquired
Jan. 21, 2011	CTSO	Stock Option	Common Stock (200,000)	$0.14	Jan. 21, 2021	200,000	Acquired
Dec. 31, 2009	CTSO	Stock Option	Common Stock (100,000)	$0.17	Dec. 31, 2019	100,000	Acquired
Jan. 28, 2009	CTSO	Stock Option	Common Stock (450,000)	$0.17	Jan. 28, 2019	450,000	Acquired
Jan. 8, 2009	CTSO	Stock Option	Common Stock (200,000)	$0.08	Jan. 8, 2019	200,000	Acquired
June 25, 2008	CTSO	Stock Option (Right to Buy)	Common Stock (7,119,328)	$0.04	June 25, 2018	7,119,328	Acquired
Dec. 31, 2007	CTSO	Stock Option (Right to Buy)	Common Stock (80,122)	$0.22	Dec. 31, 2017	80,122	Acquired
Feb. 8, 2007	CTSO	Stock Option (Right to Buy)	Common Stock (400,000)	$1.26	Feb. 8, 2017	400,000	Acquired
Feb. 8, 2007	CTSO	Stock Option (Right to Buy)	Common Stock (400,000)	$1.26	Feb. 8, 2017	400,000	Acquired

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Initial ownership (Form 3) 2 holdings

Securities held when first becoming an insider, per SEC Form 3.

Date	Ticker	Security	Shares	Ownership
July 10, 2006	CTSO	Common Stock	1,393,631	Direct
July 10, 2006	CTSO	Right to Buy→ Common Stock	—	Direct